For the Cake Base:
- 1 cup unsalted butter (softened)
- 1 cup granulated sugar
- 4 large eggs (separated)
- 1 ½ cups all-purpose flour
- 2 teaspoons baking powder
- 1 teaspoon vanilla extract
- ½ cup milk
For the Cream Filling:
- 2 cups heavy cream (chilled)
- 1 package cream cheese (softened, 8 oz / 225g)
- ½ cup powdered sugar
- 1 teaspoon vanilla extract
- 1 tablespoon cornstarch (for stability, optional)
For Garnish:
- Powdered sugar (for dusting)
